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If on average, 20% of watches coming off an assembly line are defective, and we assume that the probability of a watch being defective is independent of another watch having this characteristic, what is the
a) If the company samples 50 watches, what is the probability that less than 2 are defective. Can we use the Poisson approximation to the Binomial?
1.college students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. if the amount of sleep
WonderDrug Company wants to test the effectiveness of a new headache drug. What sampling technique (simple random, stratified random, cluster, convenience) is WonderDrug Company using in each of the following studies?
Honesty in the media. A Gallup Poll conducted from November 30 to December 2, 2007, asked a random sample of 1006 adults to rate the honesty and ethical.
evaluate completely the following statement the issue is not whether there is variation but whether the variation is
Write a program to simulate this model, and see if you can make any predictions about the proportion of white balls in the urn after a large number of draws. Is there a tendency to have a large fraction of balls of the same color in the long run?
forty percent of patrons at jays gym purchase year-long memberships and the rest purchase month-by-month memberships.
1. In recent years, the trend has been toward electrical control of fluid power systems and away from manual controls. Give one reason for this trend.
What is the probability that an individuals clotting time will be more than 3 seconds and less than 11? Assume a normal distribution
Find the discrete probability distribution for the random variable X and compute the corresponding mean and standard deviation.
In what situations will the way we deal with 'no difference' or 'no response' matter most? Explain.
Children toilet train (training age normally distributed) at an average of 26 months with a standard deviation of 2 months. How lilely is child to be trained after 30 months?
suppose that 4 candidates run for the governor of a state. how many ways are there in which the numbers of their
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